О применении технологии видеозахвата движений в определении модельных характеристик нападающего удара в пляжном волейболе

В статье кратко описываются современные технологии видеозахвата и делается попытка биомеханического анализа атакующего удара в пляжном волейболе с использованием доступных технических средств и выявления модельных параметров выполнения силового варианта нападающего удара в пляжном волейболе. Ключевые слова: современные программно-аппаратные комплексы видеозахвата, нападающий удар, биомеханические характеристики атакующего движения. The article gives a brief description of up-to-date movement capture technologies (MoCap), which are applicable to kinetic and kinematic analysis of attack in spike in beach volleyball with the use of accessible technical means. Keywords: state-of-the art video capture systems, attack strike, biomechanical analysis of attack movement

Fusarium: more than a node or a foot-shaped basal cell

Recent publications have argued that there are potentially serious consequences for researchers in recognising distinct genera in the terminal fusarioid clade of the family Nectriaceae. Thus, an alternate hypothesis, namely a very broad concept of the genus Fusarium was proposed. In doing so, however, a significant body of data that supports distinct genera in Nectriaceae based on morphology, biology, and phylogeny is disregarded. A DNA phylogeny based on 19 orthologous protein-coding genes was presented to support a very broad concept of Fusarium at the F1 node in Nectriaceae. Here, we demonstrate that re-analyses of this dataset show that all 19 genes support the F3 node that represents Fusarium sensu stricto as defined by F. sambucinum (sexual morph synonym Gibberella pulicaris). The backbone of the phylogeny is resolved by the concatenated alignment, but only six of the 19 genes fully support the F1 node, representing the broad circumscription of Fusarium. Furthermore, a re-analysis of the concatenated dataset revealed alternate topologies in different phylogenetic algorithms, highlighting the deep divergence and unresolved placement of various Nectriaceae lineages proposed as members of Fusarium. Species of Fusarium s. str. are characterised by Gibberella sexual morphs, asexual morphs with thin- or thick-walled macroconidia that have variously shaped apical and basal cells, and trichothecene mycotoxin production, which separates them from other fusarioid genera. Here we show that the Wollenweber concept of Fusarium presently accounts for 20 segregate genera with clear-cut synapomorphic traits, and that fusarioid macroconidia represent a character that has been gained or lost multiple times throughout Nectriaceae. Thus, the very broad circumscription of Fusarium is blurry and without apparent synapomorphies, and does not include all genera with fusarium-like macroconidia, which are spread throughout Nectriaceae (e.g., Cosmosporella, Macroconia, Microcera). In this study four new genera are introduced, along with 18 new species and 16 new combinations. These names convey information about relationships, morphology, and ecological preference that would otherwise be lost in a broader definition of Fusarium. To assist users to correctly identify fusarioid genera and species, we introduce a new online identification database, Fusarioid-ID, accessible at www.fusarium.org. The database comprises partial sequences from multiple genes commonly used to identify fusarioid taxa (act1, CaM, his3, rpb1, rpb2, tef1, tub2, ITS, and LSU). In this paper, we also present a nomenclator of names that have been introduced in Fusarium up to January 2021 as well as their current status, types, and diagnostic DNA barcode data. In this study, researchers from 46 countries, representing taxonomists, plant pathologists, medical mycologists, quarantine officials, regulatory agencies, and students, strongly support the application and use of a more precisely delimited Fusarium (= Gibberella) concept to accommodate taxa from the robust monophyletic node F3 on the basis of a well-defined and unique combination of morphological and biochemical features. This F3 node includes, among others, species of the F. fujikuroi, F. incarnatum-equiseti, F. oxysporum, and F. sambucinum species complexes, but not species of Bisifusarium [F. dimerum species complex (SC)], Cyanonectria (F. buxicola SC), Geejayessia (F. staphyleae SC), Neocosmospora (F. solani SC) or Rectifusarium (F. ventricosum SC). The present study represents the first step to generating a new online monograph of Fusarium and allied fusarioid genera (www.fusarium.org)

On the Application of the Technology of Video Capture Movements in Determination Model Characteristics Attacking Blow Beach Volleyball

В статье кратко описываются современные технологии видеозахвата и делается попытка биомеханического анализа атакующего удара в пляжном волейболе с использованием доступных технических средств и выявления модельных параметров выполнения силового варианта нападающего удара в пляжном волейболе.The article gives a brief description of up-to-date movement capture technologies (MoCap), which are applicable to kinetic and kinematic analysis of attack in spike in beach volleyball with the use of accessible technical means

Relationship between the technical condition of the equipment of heat and power engineering units and the noise level in the environment

The problem of environmental noise pollution from large-city centralized heating systems is considered. Based on the analysis of acoustic characteristics and vibration parameters of district boiler house power plants, the main reasons for the generation of increased noise are identified. The relationship between the technical condition of the power equipment, buildings, structures and the noise level in the environment is revealed. The possibility of developing complexes of technical measures to reduce noise pollution adjacent to the district boiler houses of the city is shown. While optimizing the selected variants of noise and vibration dampening complexes, it seems promising to use a calculated model of the noise field

Nondestructive monitoring of aircraft composites using terahertz radiation

In this paper we consider using the terahertz (THz) time domain spectroscopy (TDS) for non destructive testing and determining the chemical composition of the vanes and rotor-blade spars. A versatile terahertz spectrometer for reflection and transmission has been used for experiments. We consider the features of measured terahertz signal in temporal and spectral domains during propagation through and reflecting from various defects in investigated objects, such as voids and foliation. We discuss requirements are applicable to the setup and are necessary to produce an image of these defects, such as signal-to-noise ratio and a method for registration THz radiation. Obtained results indicated the prospects of the THz TDS method for the inspection of defects and determination of the particularities of chemical composition of aircraft parts

Political facebook posts using ideological symbols for media image designing of russia as enemy

The article examines the using of ideological symbols in political Facebook posts for media image designing of Russia as enemy. The political posts with ideological symbols in the social network Facebook in Russian and English make the material of research. The complex methods of analysis of the ideological symbols for media image designing of Russia as enemy in the modern virtual society are used. The inductive, descriptive and comparative, cognitive and discursive, semantic, definitional, functional and stylistic analysis is carried out. For the complex analysis of political Facebook posts in the modern media discourse, verbal means of ideological symbols influence on the addressee in modern foreign-language and Russian mass media linguacultural, linguapragmatic, discursive approaches are applied. In the article, we realize the aim of the study. We identify the role of ideological symbols in political Facebook posts in the modern society. The ways of analysis are useful for development of communication theory, linguapragmatics, sociolinguistics, cultural linguistics, media linguistics, virtual linguistics. In the article, we establish that in the analysis process of political posts of social network Facebook the negative image of Russia forming feeling of the coming threat, the sensation of fear proceeding from Russia, and, in this regard, fears of Facebook users comes to light. © 2016 Zheltukhina et al

Political facebook posts using ideological symbols for media image designing of russia as enemy

The article examines the using of ideological symbols in political Facebook posts for media image designing of Russia as enemy. The political posts with ideological symbols in the social network Facebook in Russian and English make the material of research. The complex methods of analysis of the ideological symbols for media image designing of Russia as enemy in the modern virtual society are used. The inductive, descriptive and comparative, cognitive and discursive, semantic, definitional, functional and stylistic analysis is carried out. For the complex analysis of political Facebook posts in the modern media discourse, verbal means of ideological symbols influence on the addressee in modern foreign-language and Russian mass media linguacultural, linguapragmatic, discursive approaches are applied. In the article, we realize the aim of the study. We identify the role of ideological symbols in political Facebook posts in the modern society. The ways of analysis are useful for development of communication theory, linguapragmatics, sociolinguistics, cultural linguistics, media linguistics, virtual linguistics. In the article, we establish that in the analysis process of political posts of social network Facebook the negative image of Russia forming feeling of the coming threat, the sensation of fear proceeding from Russia, and, in this regard, fears of Facebook users comes to light. © 2016 Zheltukhina et al

Optical absorption and photoconductivity of ZnSe:Co single crystals

Influence of cobalt impurity on the optical absorption and photoconductivity spectra of zinc selenide crystals has been considered. Basing on optical and electophysical studies results, the scheme of electronic transition in the investigated crystals is presented